Table 4 FEA and MA Results. Mesh-weighted arithmetic mean (MWAM) strain, mechanical advantage of temporal muscle group (temporal MA), mechanical advantage of quadrate muscle group (quadrate MA), and fenestrae to area ratio were calculated for all species with FEA models. Highest and lowest values are bolded in each column. MWAM strain and fenestrae-surface area could not be calculated for Microraptor zhaoianus due to poor preservation. However, since the rough locations of the origins and insertion of the temporal and quadrate muscle groups could be estimated from the specimen, temporal MA and quadrate MA could be obtained for Microraptor zhaoianus

From: Morphological disparity and structural performance of the dromaeosaurid skull informs ecology and evolutionary history